3-46
3.11 Precautions on Using File Registers
(3) Specifying the file register number exceeding the registered number
(a) For CPUs other than Universal model QCPU
An error does not occur when data are written/read to/from the file register numbers that
are greater than the registered number of points.
Note that the data cannot be written/read correctly to/from file registers.
(b) For Universal model QCPU
When data are written/read to/from the file register numbers that are greater than the
registered number of points, an error occurs. (Error code: 4101)
(4) Method for specifying file registers
The methods for specifying file registers are the block switching method and the serial
number access method.
(a) Block switching method
The block switching method specifies file register points being used in units of 32k
points (one block). File registers exceeding 32k points is specified by switching block
numbers of the file registers used in the RSET instruction. File register points are
specified in the range from R0 to R32767 for each block.
(b) Serial number access method
The serial number access method specifies file registers exceeding 32k points with
serial device numbers. File registers of multiple blocks can be used as continuous file
registers. Use 'ZR' as a device name.
RSET
EN
ENO
s
1
MOV
EN
ENO
d
s
R0
D0
RSET
EN
ENO
s
d
2
MOV
EN
ENO
d
s
R0
R0
D0
Memory card
Block 0
Block
1
Block
2
R0
R0
R3
2
7
6
7
R3
2
7
6
7
R0
to
to
to
S
p
eci
f
ying R0
in
b
lock
1
S
p
eci
f
ying R0
in
b
lock
2
MOV
EN
EN
O
d
s
ZR3
2
7
6
8
D0
MOV
EN
EN
O
d
s
ZR
655
3
6
D0
ZR0
ZR3
2
7
6
7
ZR3
2
7
6
8
ZR
655
3
5
ZR
655
3
6
Memory
card
(B
l
ock
0)
(B
l
ock
1
)
(B
l
ock
2
)
to
to
to
Summary of Contents for MELSEC Q Series
Page 1: ...Structured Programming Manual Mitsubishi Programmable Controller QCPU Common Instructions ...
Page 2: ......
Page 14: ...A 12 MEMO ...
Page 340: ...6 178 MEMO MTR ...
Page 708: ...7 368 MEMO ...
Page 776: ...8 68 MEMO ...
Page 796: ...9 20 MEMO ...
Page 804: ...App 8 MEMO ...
Page 812: ...Index 8 MEMO ...
Page 815: ......